A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6240-00-010-1124
NSN 5990-00-195-9460
NSN 6610-01-032-0204
NSN 2925-01-187-5480
NSN 5945-00-659-1658
NSN 5985-01-569-3770
NSN 6110-00-163-6223
NSN 5945-00-189-6571
NSN 6620-00-481-4210
NSN 6150-01-421-2234
NSN 6135-01-398-5922
NSN 6220-00-436-7570